{"cve_id":"CVE-2026-45498","published":"2026-05-20T13:16:36.780000+00:00","last_modified":"2026-07-23T12:10:00.110000+00:00","vuln_status":"Analyzed","description":"Microsoft Defender Denial of Service Vulnerability","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","base_score":7.5,"base_severity":"HIGH","attack_vector":"NETWORK","privileges_req":"NONE","user_interaction":"NONE","scope":"UNCHANGED","impact_c":"NONE","impact_i":"NONE","impact_a":"HIGH","cwe_ids":["CWE-400"],"in_kev":true,"kev_date_added":"2026-05-20","kev_ransomware":false,"epss_score":0.63076,"epss_percentile":0.99202,"cap_rule_version":"0.1.1","stage":"IMPACT","req_access":"NONE","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"NONE","caps":["DOS"],"terminal":true,"cap_confidence":"high","ingested_at":"2026-09-18T12:13:11.603467+00:00","first_seen":"2026-05-20T13:16:36.780000+00:00","kev_first_seen":"2026-05-20T00:00:00+00:00","novelty_score":36.78,"novelty_reasons":["EPSS_SPIKE"],"novelty_at":"2026-11-02T03:21:44.260683+00:00","vendors":["microsoft"],"products":["defender_antimalware_platform"],"affected":[{"vendor":"microsoft","product":"defender_antimalware_platform","ranges":["< 4.18.26040.7"]}]}